Therefore, the shape of the parting surface depends on the shape of the wheel forging, but sometimes for the convenience of wheel forging production, without affecting the usability of the part, the shape can be changed slightly after obtaining the consent of the relevant process and design departments. Therefore, the selection of the parting surface is not only an important work in the design of wheel forging drawings, but it can only be determined after economic and technical analysis and research. Moreover, in the specific die forging production practice, usually through the modification of the parting surface, the die forging process can be improved, the wheel forging is more favorable, and the effect of improving production efficiency is achieved.
Determining wheel forging tolerances and machining allowances: The actual size of the wheel forgings always causes wheel forgings due to groove wear and deformation, cold shrinkage unevenness, insufficient forging and underpressure, misalignment of the upper and lower dies, and surface oxidation and decarburization of the wheel forgings. There is a certain deviation in the nominal size of. Therefore, the allowable value of the positive and negative deviation between the actual size and the nominal size should be specified, that is, the tolerance of the size of the wheel forging.
On the wheel forgings, there should be a machining allowance for all parts to be machined. The size of the allowance is determined by the machining requirements (related to the shape and size of the part and the machining accuracy), and it is also subject to die forging. Impact of wheel forging tolerances that can be achieved by the process.